CVE-2024-29165

Process crash via Fletcher32 filter buffer overrun

Published May 9, 2024 · Updated Feb 13, 2025

Buffer overflow in HDF5 through 1.14.3 allows local users to corrupt a parsing process via a crafted HDF5 file, causing a crash or code execution. The H5Z__filter_fletcher32 checksum filter overruns its processing buffer while decoding malformed Fletcher32-filtered data, permitting instruction-pointer corruption. Exploitation requires a local process to parse attacker-controlled HDF5 content; successful code execution inherits that process's privileges.

CVSS severity7.4
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in HDF5 through 1.14.3 allows local users to corrupt a parsing process via a crafted HDF5 file, causing a crash or code execution. The H5Z__filter_fletcher32 checksum filter overruns its processing buffer while decoding malformed Fletcher32-filtered data, permitting instruction-pointer corruption. Exploitation requires a local process to parse attacker-controlled HDF5 content; successful code execution inherits that process's privileges.

The record

CVE
CVE-2024-29165
Published
May 9, 2024
Updated
Feb 13, 2025
Vendor
The HDF Group
Product
HDF5
Classifications
CWE-122, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <=1.14.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The HDF Group · HDF5version=0 <=1.14.3

Published CVSS scores

7.4CISA-ADPCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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